All eyes will be on the main event in Las Vegas as the Dubliner will go toe-to-toe with the highly regarded Brazilian. Their rivalry has been bubbling under for the last 12 months and there could be record interest to see who is crowned the undisputed UFC featherweight champion.

Here is an extended preview for the event, which will also see UFC middleweight champion Chris Weidman defend his title for the fourth time against No. 1 contender Luke Rockhold.